Coal compound.



TE STATES PATENT FFIGE.

COAL COMPOUND.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed July 5, 1906. Serial No. 324,797.

To all whom, it ntay concern:

Be it known that I, VVALTER I'IAMMIOK, a citizen of the United States,residing at Pittsburg, in the county of Crawford and State of Kansas,have invented certain new and useful Improvements in Coal Compounds, ofwhich the following is a specification.

This invention relates to fuel having as a base small particles of coal,such as usually consigned to the waste pile. In accordance with thisinvention the coal (slack or nut size) is mixed with a binder consistingof a solution of Swedish glue, after which the mixture is molded intothe required shape and allowed to set or harden.

To one ton of the fine or refuse coal is added a binder formed by addingsix pounds of Swedish glue to about five gallons of water, the binderbeing thoroughly incorporated with the ooal, so as to moisten theparticles and cause adhesion thereof upon the application of sufficientpressure.

It is to be understood that the quantity of water to be added to theglue to form the solution constituting the binder may vary according tothe degree of fineness of the coal and the physical properties thereof,the purpose being to dampen the fuel-base so as to cause firm adhesionof the particles, particularly when subjected to compressive force.

To prevent disintegration of the fuel, it is proposed to subject thesurface thereof to a coating of crude oil, which protects the fuel fromthe action of humidity and other cli- 3 5 matic conditions tending toafi'ect the prodthe binder. The coating of crude oil is appliedsimultaneously with the molding or shaping process and gives a finishedappearance to the product, as well as affording protection in the mannerstated.

In the marketable form of the fuel it appears as blocks or briquets, andin the commercial manufacture the mixture is forced through a suitabledie, and simultaneously with the passage of the material through the diethe crude petroleum is supplied to the surface, thereby serving as alubricant to cause the materal to pass through the die in a continuouspiece, which is subdivided to form the blocks or briquets, which are setaside to dry and harden and are then ready for market.

Having thus described the invention, what is claimed as new is-- Theprocess of manufacturing artificial fuel which consists in combiningsmall particles of coal with a binder, consisting of a solution of glue,and molding the mixture and simultaneously with the molding operationapplying crude oil to the surface of the molded mass to add to itscombustibility, to give a finished appearance thereto and protect thesame from climatic changes.

In testimony whereof I affix my signature 65 in presence of twowitnesses.

WALTER HAMMICK. Witnesses:

JOHN P. CANAN, VIOLA MCCOY.

